Air injection smoke-consuming structure for furnaces



Feb. 13, 1951 P. KERRUISH 2,541,538

AIR INJECTION SMOKE CONSUMING STRUCTURE FOR FURNACES Filed July 15, 1947 INVENTOR. law/r04 I? Af/PlPl/lf/f %%q6mm MW ATTOP/YEKS Patented Feb. 13, 1951 AIR INJECTION SMOKE-CONSUMING STRUCTURE FOR FURNACES Leighton P. Kerruish, Steelviile, Mo.

Application July 15, 1947, Serial No. 760,975

2 Claims.

This invention relates to improvements in smoke consumers for use in connection with boilers or furnaces.

A principal object of the invention is to provide a simply constructed and efficient device of this character, which is designed to commingle the products of combustion with fresh heated air, whereby all the smoke is consumed before being discharged through the smoke flue.

A preferred embodiment of the invention is illustrated in the accompanying drawings, but it is understood that modifications may be made therein without departing from the spirit of the invention as hereinafter claimed.

Figure 1 represents a longitudinal vertical section through a heating system equipped with the new and improved smoke consumer.

Figure 2 is a plan view of the structure of Figure 1.

Figure 3 is a vertical section through a nozzle for discharging fresh heated air into the combustion chamber to commingle with the products of combustion.

With particular reference to the drawings, a heating system is illustrated as comprising a floor I, a pair of spaced longitudinal side walls 2 and 3 positioned on the floor l, and a fire box 4 positioned longitudinally of and between the side walls 2 and 3. A vertically disposed bridge wall 20 for deflecting the heat upwardly against the boiler 22 is positioned transversely of and between the side walls 2 and 3 adjacent the fire box 4. Arranged in parallel spaced relation with respect to the bridge wall 20 between the side Walls 2 and 3 is a vertically disposed bafile wall I 4, the latter wall l4 forming with the bridge wall 20 and the adjacent portions of the side walls 2 and 3 a combustion chamber I B. A second vertically disposed bafile wall I5 is arranged in parallel spaced relation with respect to the battle wall l4 between the side walls 2 and 3 and forms with the wall [4 and the adjacent portions of the side walls 2 and 3 a second combustion chamber H. The battle walls I4 and [5 are each provided with openings, the openings being in the form of arches to permit gas flow therethrough. The wall M has three such arches l8, Figure 2, spaced from each other, and the wall l5 has three such arches I 9 spaced from each other, each of the arches l 8 and i9 extending down to the floor I. A vertically disposed outside wall 2| is arranged in parallel spaced relation with respect to the bafile wall l5 between the side walls 2 and 3 and forms with the wall l5 and the adjacent portions of the side walls 2 and 3 a flue chamber l2. P0-

2 sitioned between the side walls 2 and 3 intermediate the wall i5 and the wall 2| is a supporting column 23 for the boiler 22. The combustion chambers In and H also lead upwardly to the boiler. The products of. combustion are intended to pass around the column 23 to a stack that leads to the outside atmosphere.

Incoming air is conducted through a pipe 25 to an electric fan blower 26 that is actuated b a motor 21. From the blower 26, the air passes into two horizontal branches 28 and 29, the branch 28 extending laterally of the combustion chamber It! in the bottom of the bridge wall 20. Similarly, the branch 29 is positioned at the bottom of the bafile wall l4, and is somewhat lower in position than the branch 28 with respect to the chamber ill. Each of the branches 28 and 29 is provided with a series of nozzles 30, one type of which is shown in Figure 3 of the drawings. It will be observed that each nozzle 30 is directed diagonally toward the upper portion of the opposite wall of its respective combustion chamber.

In the operationof the device, the incoming air is forced through the branches 28 and 29 and through the nozzles 30, so that the ejected air has an upward circular motion, due to the convection currents of the heated products of combustion and due to the reflection from the roof of the combustion chambers. Consequently, the incoming air is thoroughly commingled with the products of combustion. As a result, a substantial proportion of the soot that passes over the bridge wall 20 is mixed with air in the first combustion chamber ill, and'a substantial proportion of the remaining soot is caught in the second combustion chamber H. As a result, very little, if any, soot'or other solid matter is left by the time the products of combustion enter the flue chamber to go up the stack.

The positioning of the second branch 29 below the first branch 28 is to permit more thorough agitation of the incoming air with the products of combustion; v

The efiiciency of the system is increased by preheating the air passing through the branches 28 and 29, and this is efiected by conducting a portion 3| of the inlet pipe 25 into the space l2 before the air goes to the blower 26.

If desired, a blow-ofi pipe 32 is mounted in the column 23 to blow sediment out of the boiler.

I claim:

1. In a heating system including a floor, spaced longitudinal side walls positioned on said floor, a. firebox positioned longitudinally of and between said side walls, a vertically disposed bridge wall positioned transversely of and between said side walls adjacent said firebox, a Vertically disposed bafile wall arranged in parallel spaced relation with respect to said bridge wall and forming with the latter wall and the adjacent portions of said side walls a combustion chamber, a second vertically disposed bafile wall arranged in parallel spaced relation with respect to said first-named baffle Wallandforming with the latter wall and the adjacent portions of said side walls a second combustion chamber, a vertically disposed outside wall arranged in parallel spaced relation with respect to said second-named bame wall and forming with the latter wall and the adjacent portions of said side walls a flue chamber, there being openings extending through each of said first and second-named baflle walls, the openings in said first and second-named baille walls being spaced from each other and each extending down to said floor, an inlet pipe, means for supplying air to'isaid inletlpipe, a first branchpipe' positioned in parallel relation with respect to the face of said bridge wall adjacent said first-named bafilerwall and supported in said bridge wall and having one end connected to said inlet pipe, a second branch pipe positioned in parallel relation with respect to the face of said first-named baffle wall adjacent tosaid second-named bafile wall andsupported in said first-named bafile wall and having one end connected to said inlet pipe, and I'- a plurality. of upwardly directed nozzles arranged in'spaced'relation along each of said branch pipes for discharging the air from said pipes.

2-. In a heating system including a fioor, spaced longitudinal side Walls positioned on said floor, a w

firebox positioned longitudinally of and between said side walls, a vertically disposed bridge Wall positioned transversely of and between'said side walls adjacent said firebox, a vertically disposed baflle Wall arranged in parallel spaced relation with respect'to said bridge wall and forming with the latter wall and the adjacent portions of said side walls a combustion chamber, a second verticala spaced from each other and each extending down to said floor, an inlet pipe, means for supplying air to said inlet pipe, a first branch pipe positioned in parallel relation with respect to the face of said bridge-wall adjacent said first-named baflle wall and supported in said bridge wall and having one end connected to said inlet pipe, a second branch pipe positioned in parallel relation with respect to the face of said first-named baffle wall adjacent said second-named baflie wall and supported in said first-named bafile wall and having one end connected to said inlet pipe, and a plurality of upwardly directed nozzles arranged in spacedrelation along each of said branch pipes for discharging the air from said pipes, said secondnamed branch pipe being disposed at a lower level than that of said first-named branch pipe.

LEIGI-ITON P. KERRUISH.

REFERENCES CITED The following'references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 202,981 Bevins Apr. 30, 1878 259,169 Kilroy June 6, 1882 854,156 Eldred May 21, 1907 921,169 Schweizer May 11, 1999 934,415 North Sept. 14, 1909 

